Well, for the sake of a bump, I'm gonna randomly promote and bash some games.
Legends of Vanadia is an excellent 2K3 game that awed me with just what could be done with the system. Though there's no demo as of yet, the system and graphics alone were more than enough to earn it a well-deserved POTM.
Soul Raves and Celestias Ferrum are great XP games, but they're slightly overrated because of the anime rips. Caro's spritework, mapping, and story are awesome enough to earn it a well-deserved POTM, but to me it seems that the Seinarukana rips are what draw people the most to the game rather than the game itself. Don't get me wrong Caro, I love you; I just think there's a little too much hype about the anime. ._.
Project Leviathan is a VX game with SUPERB mapping. It was the one game that convinced me just of the possibilities of using VX and proved to me that VX can actually be graphically impressive (during a time when I thought VX maps just couldn't be used for much). Combined with a working ABS, it simply awed me. Definitely deserving of its POTM.